If you won’t be in D.C. for Barack Obama’s inauguration on Jan. 20, you have a chance to at least get a sense of what you’ll be missing earlier that month. The Post reported today that the official inaugural rehearsal date has been set for Jan. 11. The inauguration dress rehearsal, which features stand-ins for most of the VIPs, is done every year early in the morning on a Sunday before the inauguration. This year’s…